/**
 * Copyright 2000 self.com.au
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. (http://www.apache.org/licenses/LICENSE-2.0)
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed 
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for 
 * the specific language governing permissions and limitations under the License.
 *
 * <dhamma-message src="Atisha (11th century Tibetan Buddhist master)">
 * 	The greatest achievement is selflessness. The greatest worth is self-mastery.
 * 	The greatest quality is seeking to serve others. The greatest precept is continual awareness.
 * 	The greatest medicine is the emptiness of everything. The greatest action is not conforming with the worlds ways.
 * 	The greatest magic is transmuting the passions. The greatest generosity is non-attachment.
 * 	The greatest goodness is a peaceful mind. The greatest patience is humility.
 * 	The greatest effort is not concerned with results. The greatest meditation is a mind that lets go.
 * 	The greatest wisdom is seeing through appearances. 
 * </dhamma-message>
 *
 * @author Ashin Wimalajeewa
 */
package self.amigo.io;

import java.io.*;
import java.util.*;

import org.w3c.dom.*;

import self.gee.*;
import self.xml.*;

import self.amigo.diag.layer.*;

public class ElementSelectionWriter extends FilterWriter {
  public ElementSelectionWriter( Writer o ) {
    super( o );
  }
  
  public void writeSelection( List selection ) throws IOException {
    ArrayList save = new ArrayList();
    removeConflictsWithInSelection( selection, save );

    Document doc = DomUtils.getDocumentBuilder().newDocument();
    HashMap mapper = new HashMap();
    LayerPersistenceUtils.writeTo( save, doc, null, mapper );
    PrintWriter wrtr = new PrintWriter( out );
    XmlWriter.writeXml( doc, wrtr );
  }
  
  private void removeConflictsWithInSelection( List selection, List store ) {
    int max = selection.size();
    for ( int cntr = 0; cntr < max; cntr++ ) {
      IGraphicElement elem = (IGraphicElement) selection.get( cntr );
      if ( elem.areDependentsListed(selection) )
        store.add( elem );
    }
  }
}